<if condition="0 eq $follow_state['following']">
    <a data="{$weiba_id}" following="{$follow_state['following']}" class="btn dofollowWeiba"><span>+关注</span></a>
<else />
    <a data="{$weiba_id}" following="{$follow_state['following']}" class="btn unfollowWeiba"><span>已关注</span></a>
</if>